Fabrication of 3D-interconnected microporous carbon decorated with microspheres for highly efficient hydrogen evolution reactions

Asgar, Md. Ali; Kim, Jun; Lee, Seongmin; Tran, Chau Van; Haq, Muhammad Refatul; In, Jung Bin; Kim, Seok-Min

doi:10.1016/j.microc.2023.108571

Cited by 2 publications

(1 citation statement)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During pyrolysis, the furnace temperature was increased stepwise to 1000 °C and maintained for 4 h at this temperature. The stepwise gradual increase of furnace temperature was optimized and reported in our previous experiment [35]. The LIG-CF electrode was obtained after natural cooling to room temperature, e.g., 25 °C.…”

Section: Methodsmentioning

confidence: 99%

Fabrication of Laser-Induced Graphene on Carbon Electrodes for Efficient Hydrogen Evolution Reaction

Asgar,

Van Tran,

Kim

et al. 2024

International Journal of Energy Research

Self Cite

View full text Add to dashboard Cite

Hierarchical porous carbon materials have received significant attention for application in catalytic water splitting because of their high efficiency, cost-effectiveness, and biocompatibility. In this study, laser-induced graphene (LIG) was fabricated on a carbon film- (CF-) type substrate for an efficient hydrogen evolution reaction (HER). The LIG-CF electrode was fabricated via laser-induced graphitization on a commercial polyimide (PI) film, followed by the pyrolysis of the LIG on the PI film (LIG-PI). During pyrolysis, the microscopic and material properties of the LIG remained intact, as verified through various characterizations. The as-prepared all-carbon electrode was then utilized as an electrode for the HER study in a 1.0 M KOH electrolyte and compared with LIG-PI and Pt electrodes. In the HER experiments, the optimized LIG-CF electrode exhibited excellent catalytic performance with zero-onset potential, and the potentials required to achieve high current densities of 10 and 20 mA/cm2 were 134 and 139 mV (vs. reversible hydrogen electrode (RHE)), respectively. The excellent performance of the LIG-CF electrode originates from the hierarchical porous structure of the LIG material, which serves as an electrochemically active site, and carbon substrate that facilitates the fast transport of ions at the electrode/electrolyte interface. Additionally, the carbon substrate shortens the transportation length of electrons which played a significant role for the enhanced performance of the LIG-CF electrode.

show abstract

Section: Methodsmentioning

confidence: 99%